<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>测试</h1>
<form action="reg">
	id:<input type="text" name="id" placeholder="输入id">
	username:<input type="text" name="username" placeholder="输入username">
	password:<input type="text" name="password" placeholder="输入password">
	<input type="submit" value="submit">
</form>
</body>
</html>